<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
	</head>
	<body>
		<div id="app">
			{{count}}<button v-on:click="increase">+</button>
			<button v-on:click="increase">-</button>
		</div>
		<script>
			var app = Vue.createApp ({
					data() {
						return {
							"message": "Hello Vue!",
							count:1
						}
					},
					methods:{
						increase:function(){
							this.count++;
						},
						foo:function(){
							this.count--;
						}
					}
			});
			var vm = app.mount("#app")
		</script>

	</body>
</html>
